Question Bank • QB_IDE_EXP_022 MCQ • 1 Mark

Section 5: Irrigation and Drainage Engineering

Irrigation Water Conveyance and Application Methods

Subtopic: Design of irrigation channels and underground pipelines

Question Statement:

Kennedy's critical velocity $V_0$ for non-silting and non-scouring flow in an irrigation channel of flow depth $y$ is expressed as:

Options:

  • (A) $V_0 = 0.55 m y^{0.64}$
  • (B) $V_0 = 0.84 m y^{0.50}$
  • (C) $V_0 = 0.47 m y^{0.33}$
  • (D) $V_0 = 1.15 m y^{0.75}$

Answer Key:

A

Step-by-Step Solution & Explanation

Kennedy's empirical critical velocity equation in metric units is: $V_0 = 0.55 m y^{0.64}$ where $m$ is the critical velocity ratio (CVR) and $y$ is flow depth in meters.
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